Abstract

Theologies of human nature routinely reflect the insights of evolutionary biology, for which human biological nature is variable, changing and indeterminate in its boundaries with other living things. However, these theologies do not yet reflect what biotechnology discloses about human biological nature, namely, that it is malleable and indeterminate in its boundaries with machines. Does respect for human biological nature as created by God, or protection of the human person whose nature it is, require us to refrain from taking advantage of its malleability and indeterminacy to select or design functions and traits? Or should we welcome malleability and indeterminacy as conditions for us to fulfill a vocation to determine our nature or bring it to perfection? And do malleability and indeterminacy render obsolete the notion that we look to our nature to determine what our good is? This article answers these questions.